Keeping in mind that this is version 1.0.0 and is free, this is a very usable app. I spend my day performing a variety of tasks (designing, developing, phone calls, meetings, etc.) Cube lets me very quickly assign time throughout the day.
The only limitation that Ive run into is the case where I dont have an Internet connection. So if you dont have a 3G iPad and arent within range of a hot-spot, you cant enter time. However, they are working on adding a feature, to a future release, that would store entries and reconcile them the next time a connection is available. So thats in the works.
Of course, I can think of probably a dozen other features that would be great for me. But overall, for a first release, it suits my needs perfectly.
bgohsman about Cube Time & Expense Tracker